Page loads an empty map, no locations listed

I’m running SimpleMap version 2.4.10.1, and all I get on the page load is a blank box where the map should be, no list of locations, and then the rest of my page rendered normally.
My site: https://neohioscca.com/raceways-clubs/

The error reported for that page is as follows:

Uncaught ReferenceError: jQuery is not defined
at https://neohioscca.com/raceways-clubs/:643:10

Lines 638-643 on that page look as follows:

load_simplemap( lat, lng, aspid, ascid, asma, shortcode_zoom_level, map_type, shortcode_autoload );
searchLocations( 0 );
}
});})(jQuery);</script>

Any clues as to what I should be trying here? Thank you.